CN109095775B - Transparent glaze suitable for high-strength white porcelain and preparation method thereof - Google Patents
Transparent glaze suitable for high-strength white porcelain and preparation method thereof Download PDFInfo
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- CN109095775B CN109095775B CN201810957975.1A CN201810957975A CN109095775B CN 109095775 B CN109095775 B CN 109095775B CN 201810957975 A CN201810957975 A CN 201810957975A CN 109095775 B CN109095775 B CN 109095775B
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- white porcelain
- transparent glaze
- glaze
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
- C03C8/20—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions containing titanium compounds; containing zirconium compounds
Abstract
The invention discloses a transparent glaze suitable for high-strength white porcelain, which comprises the following components: 10-25 wt% of potash feldspar micro powder, 15-30 wt% of water-milled quartz, 10-30 wt% of low-expansion frit, 4-10 wt% of kaolin, 8-15 wt% of calcined talc, 5-10 wt% of calcined zinc oxide, 2-6 wt% of barium carbonate, 1-5 wt% of zirconium silicate, 1-5 wt% of high-temperature glass network reinforcing agent and 0-3 wt% of dolomite. In addition, a preparation method of the transparent glaze suitable for the high-strength white porcelain is also disclosed. According to the invention, by optimizing a formula system and introducing the high-temperature low-expansion frit and the high-temperature glass network reinforcing agent, the thermal shock resistance and the surface performance of the porcelain product are effectively improved, so that the product quality is improved, the industrial upgrading is facilitated, and the economic benefit and the social benefit are obvious.
Description
Technical Field
The invention relates to the technical field of daily ceramic glaze, in particular to transparent glaze suitable for high-strength white porcelain and a preparation method thereof.
Background
The white porcelain is a traditional porcelain of Chinese nationality, is high and noble and is deeply favored by people. "Chinese white" (BLANC DE CHINE) is one kind of white porcelain, is produced in Fujiande, and has the names of "ivory white", "lard white" and "goose down white" because the product is made fine, firm and crystal like jade and glaze moist and grease-like, so that it has unique style in the white porcelain system of China, and possesses important position in the ceramic development history, and has the reputation of "east art" internationally. However, when the German white porcelain is used for daily ceramic tea tableware, the German white porcelain has the defects of poor thermal shock resistance, narrow melting temperature range, more pinholes and the like, and the German white porcelain can crack after one-time rapid cooling and rapid heating at 140-20 ℃ through a thermal stability test. The national standard requires that the once rapid cooling and rapid heating at 180-20 ℃ in the thermal stability test is not cracked, and some export standards, particularly large products, require that the once rapid cooling and rapid heating at 200-20 ℃ in the thermal stability test is not cracked, obviously, the quality and performance of the current products seriously limit the range of the Dehua white porcelain used as tea tableware. The main reason is that there is no transparent glaze with good combination of the green glaze, and in view of the improvement of the blank strength of the white porcelain, the expansion coefficient of the white porcelain will be reduced, and if there is no transparent glaze with good combination of the green glaze, the poor combination between the green glazes will further reduce the strength of the white porcelain, and the thermal stability will further deteriorate, so that it has become a great technical problem to be solved in the prior art. At present, through research and development, the thermal stability of part of existing products is tested to reach 180-20 ℃ and does not crack when being quenched and heated once, but the products are still unstable, and the glaze surface has many pinholes, the glossiness is poor, the melting temperature range of the glaze is narrow, the influence of the temperature fluctuation of a kiln is large, the qualified rate is low, and the requirements of the domestic and international current standards are still difficult to achieve.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the transparent glaze which is applicable to high-strength white porcelain, has easily available raw materials and low price, can ensure the performance index of the product, and effectively improves the thermal shock resistance and the surface performance of the porcelain product by optimizing a formula system and introducing a high-temperature low-expansion frit and a high-temperature glass network reinforcing agent, thereby improving the product quality and realizing the industrial upgrading. The invention also aims to provide a preparation method of the transparent glaze suitable for the high-strength white porcelain.
The purpose of the invention is realized by the following technical scheme:
the invention provides a transparent glaze suitable for high-strength white porcelain, which comprises the following components: 10-25 wt% of potash feldspar micro powder, 15-30 wt% of water-milled quartz, 10-30 wt% of low-expansion frit, 4-10 wt% of kaolin, 8-15 wt% of calcined talc, 5-10 wt% of calcined zinc oxide, 2-6 wt% of barium carbonate, 1-5 wt% of zirconium silicate, 1-5 wt% of high-temperature glass network reinforcing agent and 0-3 wt% of dolomite. Preferably, it consists of: 10-25 wt% of potash feldspar micro powder, 15-25 wt% of water-milled quartz, 15-30 wt% of low-expansion frit, 4-10 wt% of kaolin, 8-15 wt% of calcined talc, 5-10 wt% of calcined zinc oxide, 2-6 wt% of barium carbonate, 1-5 wt% of zirconium silicate, 1-5 wt% of high-temperature glass network reinforcing agent and 1-3 wt% of dolomite.
Furthermore, the low-expansion frit comprises 40-65 wt% of lithium-containing mineral, 15-35 wt% of quartz, 10-25 wt% of boric acid, 3-6 wt% of zinc oxide, 2-6 wt% of calcined talc and 1-3 wt% of titanium dioxide. The preferable scheme is that the lithium-containing mineral accounts for 40-65 wt%, the quartz accounts for 15-28 wt%, the boric acid accounts for 10-25 wt%, the zinc oxide accounts for 3-6 wt%, the calcined talc accounts for 2-6 wt%, and the titanium dioxide accounts for 1-3 wt%. Wherein the lithium-containing mineral is spodumene and petalite.
Further, the high-temperature glass network reinforcing agent is a high-boron mineral or a high-boron flux; wherein the mineral of Gapeng is borocalcite and periclase.
The other purpose of the invention is realized by the following technical scheme:
the preparation method of the transparent glaze suitable for the high-strength white porcelain, provided by the invention, comprises the following steps:
(1) adding the components into a ball mill according to the proportion for mixing and ball milling, and then sieving to remove iron and age for later use;
(2) and (3) firing under the condition of an oxidizing atmosphere, wherein the glaze firing temperature is 1290-1330 ℃, the firing period is 12-16 h, and the heat preservation time is 90-120 min, so that the transparent glaze suitable for the high-strength white porcelain is obtained.
In the scheme, the ball milling is carried out in the step (1) until the fineness is 325 meshes and the screen residue is 0.1-0.4%.
The invention has the following beneficial effects:
(1) according to the invention, a formula system is optimized, and the high-temperature low-expansion frit is introduced, so that the low-expansion performance of the glaze can be ensured, the thermal stability of the high-strength germanized white porcelain is improved, and the thermal shock resistance can reach the thermal stability test of 200-20 ℃ without cracking after one-time quenching and rapid heating; secondly, the melting temperature range of the glaze is expanded under the condition of oxidizing atmosphere, and the influence of the temperature fluctuation of a kiln is small, so that the number of transparent glaze pinholes is small; thirdly, the glaze material is more fully melted, the air holes in the glaze are less, the transparency is improved, the defects of poor glossiness, pinholes on the glaze surface and the like are thoroughly solved, and the product quality and the performance are ensured.
(2) The invention can enhance the network structure of the transparent glaze glass phase by introducing the high-temperature glass network reinforcing agent, thereby enabling the porcelain product to resist chemical corrosion and scratches of metal cutters such as knife and fork, and the hardness of the scratches of the glaze surface to reach 5.5 level.
(3) The transparent glaze can effectively ensure the quality of porcelain products, and provides necessary conditions for the German white porcelain to be used for daily ceramic tea tableware and enter the porcelain market for high-grade hotels, thereby being beneficial to realizing industrial upgrading, having obvious economic and social benefits and being beneficial to the technical progress and application development of the German white porcelain industry.
The present invention will be described in further detail with reference to examples.
Detailed Description
The embodiment of the invention is suitable for the transparent glaze of high-strength white porcelain, and the glaze composition is shown in table 1.
Table 1 glaze composition (wt%) of transparent glaze suitable for high strength white porcelain of the present invention
The high-temperature glass network reinforcing agent adopts the borocalcite
The composition of the low expansion frit in each example in table 1 is shown in table 2.
Table 2 composition of low expansion frit in transparent glaze for high strength white porcelain according to example of the present invention (wt%)
Lithium-containing minerals using spodumene
The preparation method of the transparent glaze suitable for the high-strength white porcelain comprises the following steps:
(1) adding the above materials into a ball mill according to a ratio, mixing and ball milling until the fineness is 325 meshes and the residue is 0.1-0.4%, and then sieving to remove iron and age for later use;
(2) and (3) firing under the condition of an oxidizing atmosphere, wherein the glaze firing temperature is 1290-1330 ℃, the firing period is 12-16 h, and the heat preservation time is 90-120 min, so that the transparent glaze suitable for the high-strength white porcelain is obtained.
The preparation method of each embodiment of the invention has the process parameters shown in table 3.
Table 3 process parameters of the method for preparing transparent glaze suitable for high strength white porcelain according to the embodiment of the present invention
The transparent glaze suitable for high-strength white porcelain prepared by the embodiment of the invention is applied to high-strength pug (the breaking strength is more than or equal to 90MPa), the glaze of the obtained porcelain product is bright and smooth, the glaze does not crack when the porcelain product is subjected to one-time rapid cooling and rapid heating at the temperature of 200-20 ℃ in a thermal stability test, and the scratch hardness of the glaze is 5.5 grade. The high-strength mud material is matched with glaze materials in the prior art, the obtained porcelain product is subjected to one-time quenching and quick-heating cracking at the temperature of 160-20 ℃ in a thermal stability test, and the scratch hardness of the glaze surface is 4-grade. Obviously, the transparent glaze effectively improves the quality and performance of products.
Claims (6)
1. A transparent glaze suitable for high-strength white porcelain is characterized by comprising the following components: 10-25 wt% of potash feldspar micro powder, 15-30 wt% of water-milled quartz, 10-30 wt% of low-expansion frit, 4-10 wt% of kaolin, 8-15 wt% of calcined talc, 5-10 wt% of calcined zinc oxide, 2-6 wt% of barium carbonate, 1-5 wt% of zirconium silicate, 1-5 wt% of high-temperature glass network reinforcing agent and 0-3 wt% of dolomite;
the low-expansion frit comprises 40-65 wt% of lithium-containing mineral, 15-35 wt% of quartz, 10-25 wt% of boric acid, 3-6 wt% of zinc oxide, 2-6 wt% of calcined talc and 1-3 wt% of titanium dioxide;
the high-temperature glass network reinforcing agent is a high-boron mineral or a high-boron flux, wherein the high-boron mineral is borocalcite or boromagnesite;
the transparent glaze is applied to high-strength pug with the breaking strength of more than or equal to 90MPa, and is sintered under the condition of an oxidizing atmosphere, the glaze sintering temperature is 1290-1330 ℃, the sintering period is 12-16 h, the heat preservation time is 90-120 min, the obtained porcelain product does not crack after one-time rapid cooling and rapid heating at the temperature of 200-20 ℃ in a heat stability test, and the scratch hardness of the glaze is 5.5 grade.
2. The transparent glaze suitable for high-strength white porcelain according to claim 1, which is characterized by consisting of: 10-25 wt% of potash feldspar micro powder, 15-25 wt% of water-milled quartz, 15-30 wt% of low-expansion frit, 4-10 wt% of kaolin, 8-15 wt% of calcined talc, 5-10 wt% of calcined zinc oxide, 2-6 wt% of barium carbonate, 1-5 wt% of zirconium silicate, 1-5 wt% of high-temperature glass network reinforcing agent and 1-3 wt% of dolomite.
3. The transparent glaze suitable for high-strength white porcelain according to claim 1, wherein: the low-expansion frit comprises 40-65 wt% of lithium-containing mineral, 15-28 wt% of quartz, 10-25 wt% of boric acid, 3-6 wt% of zinc oxide, 2-6 wt% of calcined talc and 1-3 wt% of titanium dioxide.
4. The transparent glaze suitable for high-strength white porcelain according to claim 1 or 3, wherein: the lithium-containing mineral is spodumene and petalite.
5. The process for the preparation of a transparent glaze for high-strength white porcelain according to any one of claims 1 to 4, characterized by comprising the steps of:
(1) adding the components into a ball mill according to the proportion for mixing and ball milling, and then sieving to remove iron and age for later use;
(2) and (3) firing under the condition of an oxidizing atmosphere, wherein the glaze firing temperature is 1290-1330 ℃, the firing period is 12-16 h, and the heat preservation time is 90-120 min, so that the transparent glaze suitable for the high-strength white porcelain is obtained.
6. The method for preparing the transparent glaze suitable for high-strength white porcelain according to claim 5, wherein the method comprises the following steps: and (2) ball-milling in the step (1) until the fineness is 325 meshes and the screen residue is 0.1-0.4%.
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| CN110054413A (en) * | 2019-06-10 | 2019-07-26 | 佛山市玖玖新陶科技有限公司 | It is a kind of to remove simultaneously formaldehyde, except the ceramic glaze of toluene and antibacterial |
| CN110204208B (en) * | 2019-06-15 | 2021-11-23 | 景德镇陶瓷大学 | Easy-to-clean milky glaze suitable for low-expansion ceramic and preparation method and application thereof |
| CN112979166B (en) * | 2019-12-02 | 2022-09-09 | 北京建筑材料科学研究总院有限公司 | High-temperature-resistant low-expansion glaze coating, glaze high-temperature-resistant material and preparation method thereof |
| CN112047629A (en) * | 2020-09-07 | 2020-12-08 | 福建省德化贝思家居有限公司 | High-temperature-resistant low-expansion ceramic glaze and preparation method thereof and ceramic product |
| CN112897881A (en) * | 2021-01-15 | 2021-06-04 | 景德镇陶瓷大学 | High-temperature iron sand gold glaze and preparation method and application thereof |
| CN113233769A (en) * | 2021-05-24 | 2021-08-10 | 福建省德化县中国白陶瓷有限责任公司 | Chinese blue transparent glaze water and preparation method thereof |
| CN115028362A (en) * | 2022-06-10 | 2022-09-09 | 山东兆鼎瓷业有限公司 | High-performance daily fine porcelain colored glaze |
| CN115784614B (en) * | 2022-12-09 | 2023-11-24 | 德化县辉杰瓷业有限公司 | Low-expansion ceramic glaze and preparation method thereof |
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| CN101538164A (en) * | 2009-04-24 | 2009-09-23 | 景德镇陶瓷学院 | Process for preparing super-low expansion ceramic material |
| CN105541114A (en) * | 2015-12-23 | 2016-05-04 | 江西宏瑞新材料有限公司 | Frit with high melting point at beginning and low expansion coefficient as well as preparation method of frit |
| CN107162424A (en) * | 2017-07-03 | 2017-09-15 | 福建德化五洲陶瓷股份有限公司 | Ceramic whiteware high-performance glaze and preparation method thereof |
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Patent Citations (3)
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| CN101538164A (en) * | 2009-04-24 | 2009-09-23 | 景德镇陶瓷学院 | Process for preparing super-low expansion ceramic material |
| CN105541114A (en) * | 2015-12-23 | 2016-05-04 | 江西宏瑞新材料有限公司 | Frit with high melting point at beginning and low expansion coefficient as well as preparation method of frit |
| CN107162424A (en) * | 2017-07-03 | 2017-09-15 | 福建德化五洲陶瓷股份有限公司 | Ceramic whiteware high-performance glaze and preparation method thereof |
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